Proton irradiation of lithium fluoride induces the formation of point defects within the material, known as color centers, some of which are laser-active. The volume distribution of these stable defects stores information about the energy spectrum of the proton beam that generated them. By analyzing their visible radiophotoluminescence spatial distribution, detected in optically transparent crystals using a fluorescence microscope, it is possible to estimate the shape of this spectrum. To perform this task for proton energies of the order of a few MeV, we present a random-optimization method that relies on a set of Monte Carlo-simulated Bragg curves.
Energy spectrum of protons below 10 MeV using color-center radiophotoluminescence in LiF crystals: A Monte Carlo-supported random-optimization estimator
Nichelatti E.;Piccinini M.;Ampollini A.;Astorino M. D.;Bazzano G.;De Angelis C.;Nenzi P.;Nigro V.;Ronsivalle C.;Surrenti V.;Trinca E.;Vincenti M. A.;Montereali R. M.
2025-01-01
Abstract
Proton irradiation of lithium fluoride induces the formation of point defects within the material, known as color centers, some of which are laser-active. The volume distribution of these stable defects stores information about the energy spectrum of the proton beam that generated them. By analyzing their visible radiophotoluminescence spatial distribution, detected in optically transparent crystals using a fluorescence microscope, it is possible to estimate the shape of this spectrum. To perform this task for proton energies of the order of a few MeV, we present a random-optimization method that relies on a set of Monte Carlo-simulated Bragg curves.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
